Jökull - 01.10.1998, Blaðsíða 20

since 1933 or 1934, by lay people in the beginning
and by professional surveyors since the 1960s.
Hagafellsjökull vestari surged in 1972 and 1980
but previous surges are not recorded (Theodórsson,
1980). It has been monitored at two locations.
Hagafellsjökull eystri surged in 1976 and 1980 but
previous surges are not recorded (Theodórsson, 1980).
Jökulkrókur (Fúlakvísl, Þjófadalir) is located on
the eastern margin of Langjökull. Until 1972 the
glacier margin was monitored at a location north of
the valley Þjófadalir at the outlet of the river Fúlakvísl,
but after that the monitoring has been carried out at a
location south of the valley. There are no recorded
surges in this part of the margin of Langjökull.
The approximate location of the termini of Haga-
fellsjökull vestari and Hagafellsjökull eystri around
1890 has been inferred by Sigbjamarson (1967).
HRÚTFELLS J ÖKULL (REGNBÚÐAJÖKULL)
Hrútfellsjökull is a 7 km2 ice cap in central Iceland
with several outlet glaciers (Fig. 5). The summit of
the ice cap is 1400 m a.s.l. Three of the outlet glaciers
run parallel to each other towards NE and one faces
N. They were monitored by Jón Eyþórsson from 1933
to 1959.
LOÐMUNDARJÖKULL (KERLINGARFJÖLL)
Loðmundarjökull is a small glacier in central Ice-
land (Fig. 5) which was monitored by Jón Eyþórsson
from 1932 to 1962.
GLJÚFURÁR J ÖKULL
Gljúfurárjökull is a valley glacier in central north-
em Iceland (Fig. 6). A bench mark was established in
1939 but the marks are very vulnerable in the area be-
Table 2. Glacier variations in Iceland 1930-1995. Records marked with a superscripted star are shown in Figures 7-
13. Glacier variations of several glaciers in Iceland prior to 1930 derived from historical accounts or other indirect
sources are given in the second column. Superscripted numbers in the second column refer to footnotes with
additional information at the end of the table. The last column gives the total variation during the longest unbroken
period of observations within the monitoring period for each measurement location.
Jökull 30/31 131/321 32/33133/34134/35 135/36136/37137/38 138/39139/40140/41 141/42142/43143/44144/45145/46146/47147/48148/49149/501 50/51151/52152/53 153/541 54/55155/56156/57157/58158/59J
I. DRANGAJÖKULL
1840-1931
1. Leirufjaröarjökull* -3250* | -71 | -40 | -30 | -42 | 0 |-200 | -35 |+539 |+1501+2721 +37 | 0 | -15 | -20 |-100 | -115 | -12 | -8 | -4 | O | -68 |-U°| -30 | -63 |
1887-1931
2. Kaldalónsjökull* -3402 | -70 | -34 | -95 | -26 | +39 | -1-107 | +41 | +2 | +2 | -91 -5 | -41 | -3 | -14 | -19 | -17 | -68 | -3 | -12 | -73 | -48 |
1850-1931
3. Reykjafjaröarjökull* -24003 -154 | -60 j +82 |+194 +495 -27 +57 +2 -102 -5 -8 | -29 | -34 j -2 | -48 | -54 | -210 | -30 | -40 | -228 | -72 | -26 | -40 1 -15 | -20j
4. Þaralátursjökull* -80 -6 -47 0 -14 -119 0
II. SNÆFELLSJÖKULL
1. Hymingsjökull, staður 1 * -57 -78 -30 -60 -40 -100 -52 -50 -48 -30 -100 -15 -55 -32 -33 | -35 | 0 -35 -65 | -6 | -1*_
—*,—, staöur 2 -31 -78 -33 -25 -105 -35 -15 -50 -30 -40 -25 -30 -50 -128 -62 -40
2. Jökulháls* -35 -61 -19 -20 -28 -22 -110 -21 -28 +3 -12 -192 -50 -50 | -30 | -10 -10 -10 | -48 |
3. Noröurkinn* -80 -65 -30 -38 -37 -60 -55 -15 -10 -66 -34 -52 -20 + 10 j
4. Blágilsjökull, staöur I -103 -100 -50 -23 -30 -38 -37 -60 -55 -15 -10 -66 -34 -52 -20
—»—, staöur 2* -103 -100 -50 -23 -38 -66 -32 -27 -104 -41 -25 +6 -12 -21 -15 +5 | -25 | -80 j
- staður 3 -103 -100 -50 -23 -10 -98 -61 -12 -135 -15 -3 -22 -6 -30 0
S. Hólatindajökull* -12 -48
III. EYJAFJALLAJÖKULL
1. Gígjökull* -55 -25 -35 -72 -68 -50 -88 -62 -31 -123 -91 -82 + 14 -10 +328 | -181
2. SeljavallajökuII, staöur 1 * -26 -50 -20 -13 -72 -36 -74 -16 -136 -50 -30 -14 -74 -37 -41 -11 -234
—,,—, staöur 2* -45 -30 -25 -27 -30 -37 -20 -37 -63 -41 -28 -16 -31 -46 -4 -9 -11 -
IV. MÝRDALSJÖKULL
1. Sólheimajökull, vesturtunga* -3 | -22 -70 -52 j -32 | -103 -30 | -40 -21 -35 -22 -35 -37 -38 -47 -30 -20 +5 + 15 -9 +3 -48 -26 -14 -37 -40
Jökulhaus* -9 -46 -30 -14 -65 -30 -11 -24 -10 -65 -65 -10 +20 + 15 -5 -7 -17 -21 0 0 -5 -10
—,,—, austurtunga* -52 1 -35 -47 -10 | -40 | -25 -40 | -45 -75 -53 -42 -35 -5 -25 -20 -20 -25 + 10 + 10 -7 -18 -10 -20 -20 -30 -25
2. Kötlujökull _
3. Öldufellsjökull* -
18
JOKULL, No. 45, 1998